Schiseling mechanical structure and use method

Abstract

The invention relates to the technical field of concrete scabbling, in particular to a scabbling mechanical structure and a using method.The scabbling mechanical structure comprises an outer shell, a feeding connecting piece and a scabbling assembly, a scabbling head is arranged at one end of the outer shell, the scabbling assembly is arranged in the outer shell, and the scabbling assembly is connected with the feeding connecting piece; the feeding connecting piece is connected with the chiseling head in a sliding manner; the power conversion unit comprises a first piston piece, a second piston piece and a power conversion piece, the driving unit is used for supplying water to the chiseling head through the first piston piece, and the driving unit drives the chiseling head to extend or retract through the second piston piece; the driving unit transmits power to the chiseling head through the power conversion piece; the technical problems that as rotation, feeding and water spraying cannot be coupled through a traditional scabbling machine, the functions are mutually independent, cooperative work cannot be achieved, the scabbling depth is uneven, and physical output is large are solved.

Description

Technical Field

[0001] This invention relates to the field of concrete roughening technology, specifically to a roughening machine structure and its usage method. Background Technology

[0002] In the fields of building construction and renovation of old concrete structures, in order to ensure a strong bond between the new and old concrete layers, it is usually necessary to roughen the hardened surface of the old concrete. The purpose of roughening is to break the smooth cement paste film on the surface, expose the coarse aggregate inside, and form a rough contact surface, thereby significantly enhancing the bond strength and shear strength between the new and old concrete.

[0003] Currently, common roughening methods are mainly divided into manual roughening and mechanical roughening. Manual roughening relies on workers using tools such as hammers and chisels to strike the concrete surface. This method is extremely labor-intensive, inefficient, and difficult to guarantee quality, making it unsuitable for large-scale construction. To overcome these shortcomings of manual roughening, various mechanical roughening structures have emerged, such as rotary mechanical roughening equipment. This equipment uses the rotating cutting action of a drill bit to erode the concrete surface. However, this type of equipment has relatively limited functionality, only achieving the rotating cutting motion of the drill bit. It cannot actively feed while rotating, and the depth of penetration into the concrete (i.e., the feed rate) requires the operator to exert a lot of physical strength to push the entire machine, greatly increasing physical exertion during construction. This feeding method is unstable, and when dealing with high-grade concrete or hard old concrete surfaces, the shearing and frictional forces of pure rotation are limited, easily causing "slippage." This results in only shallow scratches on the concrete surface, failing to effectively break down the hard aggregate inside the concrete, leading to insufficient texture depth and a rounded outline, which cannot provide bonding between new and old concrete. The mechanical interlocking structure with sufficient micro-interlocking force creates shallow textures that severely affect the bonding strength of the interface, posing a safety hazard to the long-term durability and integrity of the structure. Although some shaving equipment attempts to connect external water spraying systems to reduce dust and debris, these systems are usually independent of the shaving equipment and require additional water pumps and control systems. This not only increases the complexity and manufacturing cost of the equipment, but also often results in poor synchronization and coverage between the water flow and the drill bit's working point. Traditional equipment cannot effectively couple the three actions of rotation, feeding, and water spraying. During the shaving process, the separation of rotation and feeding actions makes it impossible to control the shaving depth according to the concrete characteristics, while the independence of the water spraying action results in poor dust suppression. The pervasive dust affects the construction environment and the health of personnel, and it is also difficult to ensure the wetness of the concrete surface after shaving to facilitate subsequent construction.

[0004] Therefore, in view of this, the inventor proposes a chipping machine structure and a method of use to solve the above-mentioned technical problems. Summary of the Invention

[0005] One objective of this invention is to provide a chiseling machine structure that solves the technical problem that traditional chiseling machines cannot couple rotation, feeding and water spraying, resulting in uneven chiseling depth and high physical labor consumption due to the independent functions and inability to work together. The second objective is to provide a method of use.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A chiseling mechanism includes a housing, a feed connector, and a chiseling assembly. A chiseling head is disposed at one end of the housing, and the chiseling assembly is disposed within the housing. The chiseling assembly is connected to the feed connector, and the feed connector is slidably connected to the chiseling head. The burring assembly includes an inner housing, a drive unit disposed in the inner housing, and a power conversion unit connected to the drive unit. The power conversion unit includes a first piston, a second piston, and a power conversion component. The first piston, the second piston, and the power conversion component are connected to the drive unit. The drive unit supplies water to the chisel head through the first piston. The drive unit drives the chisel head to extend or retract through the second piston. The drive unit transmits power to the chisel head through the power conversion component.

[0007] Furthermore, the inner housing includes a partition plate and a water tank disposed on the partition plate, and the drive unit and the power conversion unit are disposed below the partition plate.

[0008] Furthermore, the drive unit includes a drive frame fixedly mounted on a partition plate, a gear disk rotatably mounted inside the drive frame, a connecting rod eccentrically hinged to the gear disk, a push rod hinged to the connecting rod, the push rod slidably mounted on the drive frame, and a sliding plate connected to the end of the push rod. The first piston, the second piston, and the power conversion component are connected to the sliding plate. A motor is fixedly mounted on the drive frame, and the output shaft of the motor is connected to a drive gear, which meshes with the gear disk.

[0009] Furthermore, the first piston component includes a first piston cylinder and a first piston rod that is slidably and sealed within the first piston cylinder, and the first piston rod is fixedly connected to the sliding plate; The first piston cylinder has an inlet and an outlet. A first one-way valve diaphragm is provided at the inlet, and a second one-way valve diaphragm is provided at the outlet. The inlet is connected to an inlet pipe that extends into the water tank, and the outlet is connected to an outlet pipe that is connected to the burr head.

[0010] Furthermore, the second piston component includes a second piston cylinder and a second piston rod that is slidably and sealingly connected within the second piston cylinder, the second piston rod being fixedly connected to the sliding plate; The second piston cylinder has a first oil chamber, and the second piston cylinder has an oil outlet that communicates with the first oil chamber. An oil pipe is connected to the oil outlet.

[0011] Furthermore, the power conversion component includes a first conversion component and a second conversion component fixed to the outer casing; The first conversion component includes a first conversion shell fixed to the outer shell, a first gear rotatably disposed inside the first conversion shell, the first gear meshing with a rack, and the rack being fixedly connected to the sliding plate; The second conversion component includes a second conversion shell fixed to the outer casing. A first output shaft and a second output shaft are rotatably connected to the second conversion shell. The first output shaft is coaxially and fixedly connected to the first gear. A first bevel gear is coaxially and fixedly disposed on the first output shaft. A second bevel gear is coaxially and fixedly disposed on the second output shaft. The first bevel gear and the second bevel gear mesh with each other.

[0012] Furthermore, the feed connector includes a feed sleeve coaxially fixedly disposed with the second output shaft, a second oil cavity is formed inside the feed sleeve, the second oil cavity is filled with hydraulic oil, and a drive shaft is slidably connected to the second oil cavity in a sealed manner, the drive shaft being connected to the burring head; An oil pipe connects the first oil chamber and the second oil chamber.

[0013] Furthermore, the chisel head includes a chisel box and a spray box. The chisel box and the spray box are slidably disposed on the outer shell. A chisel drill is rotatably disposed on the side of the chisel box away from the spray box. The drive shaft passes through the spray box and is connected to the chisel drill.

[0014] Furthermore, the chiseling box is provided with several spray columns, each spray column having several spray holes, the spray columns being connected to the spray box, and the water outlet pipe being connected to the spray box.

[0015] Furthermore, a handle is provided on the outer casing.

[0016] On the other hand, the present invention also proposes a method of using a chiseling mechanical structure, including adopting the aforementioned chiseling mechanical structure, and further including the following steps: S1: Secure the outer casing to the robotic arm or robot and position the chisel head toward the old concrete work surface; S2: Start the motor, drive the sliding plate to reciprocate through the drive unit, and synchronously drive the power conversion component, the first piston component and the second piston component, so that the burring drill performs rotary cutting on the concrete surface, the burring head continuously cuts into the working surface under hydraulic feed, and at the same time the spraying system pulses water to suppress dust in the cutting area. S3: Under the action of the drive unit, the burr drill periodically switches between forward cutting feed and reverse reset. During reverse rotation, the second piston drives the burr head to retract, while the spray system continues to work to cool and clean. S4: Move the mobile device to the next work area and repeat S2-S3 until the work is completed. Then stop the motor and all actions will terminate synchronously.

[0017] The beneficial effects of this invention are: This invention achieves rigid synchronization and intelligent coordination of rotary cutting, hydraulic feeding, and pulse water spraying functions through a single motor-driven mechanical transmission mechanism (such as a gear disk, push rod, or sliding plate). These three actions originate from the same power source and follow a preset mechanical timing sequence, fundamentally solving the technical problem of independent functions and ineffective coupling in traditional equipment. By adopting a deep coupling approach, the burr drill can simultaneously obtain stable automatic feeding and precise dust suppression water spraying while performing effective cutting in forward rotation. This not only significantly improves the consistency of burr depth and eliminates inconsistencies caused by manual pushing, but also completely liberates the operator from heavy physical labor, achieving a leapfrog improvement in construction quality and efficiency.

[0018] This invention employs a single drive motor, via a gear and linkage mechanism, to convert rotational motion into the reciprocating motion of a sliding plate. The sliding plate synchronously drives the power conversion component and the second piston, enabling the burr drill to simultaneously perform forward and reverse rotational cutting and stable hydraulic feed. By utilizing a combined rotational and impact force, it effectively overcomes the slippage problem of pure rotational burring on hard concrete surfaces. This not only easily breaks up internal aggregates but also creates a uniformly deep, sharply defined rough texture, providing strong mechanical interlocking force between the new and old concrete, ensuring the bonding strength of the interface and the long-term durability of the structure.

[0019] This invention achieves a high degree of concentration and efficient utilization of energy and resources during the working phase by controlling the timing logic of three actions: rotation, feeding, and water spraying. When the chisel drill rotates forward to perform effective cutting, active feeding and water spraying are performed simultaneously, avoiding water waste. When the chisel drill reverses to release jamming and reset its position, water spraying stops simultaneously and hydraulic oil retraction is performed, reducing water consumption during non-cutting phases. This not only significantly reduces water consumption but also keeps the concrete debris brought back dry, making it easier to remove from the cutting area rather than forming a difficult-to-handle viscous slurry. Thus, it simultaneously achieves multiple goals: improving cutting efficiency, optimizing resource utilization, and improving chip removal. In addition, this invention abandons the traditional method of relying entirely on the operator's physical strength to drive the entire machine to control the cutting depth. Instead, a second piston generates stable hydraulic pressure to drive the chisel head for axial feeding, so that the chiseling depth is no longer affected by the operator's physical strength, experience, and working posture. This further improves the stability and reliability of construction and reduces labor intensity and construction costs.

[0020] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the chiseling mechanism of the present invention; Figure 2 This is a schematic diagram of the chiseling assembly and chiseling head in the chiseling mechanical structure of the present invention; Figure 3 In the chiseling mechanical structure of this invention Figure 2 A cross-sectional view; Figure 4 In the chiseling mechanical structure of this invention Figure 3 Schematic diagram of Part A; Figure 5 This is a partial structural diagram of the chiseling mechanism of the present invention; Figure 6 This is a schematic diagram of the drive unit in the chiseling mechanism of the present invention.

[0022] The components include: a chisel head 1, a chisel box 11, a spray box 12, a chisel drill 13, a spray column 14, an outer shell 2, a feed connector 3, a sleeve 31, a second oil chamber 32, a drive shaft 33, a chisel assembly 4, an inner shell 41, a partition plate 411, a water tank 412, a drive unit 42, a drive frame 421, a gear disk 422, a connecting rod 423, a push rod 424, a sliding plate 425, a motor 426, a drive gear 427, and a power conversion unit 43. Piston component 431, first piston cylinder 4311, first piston rod 4312, water inlet pipe 4313, water outlet pipe 4314, second piston component 432, second piston cylinder 4321, second piston rod 4322, first oil chamber 4323, oil pipe 4324, power conversion component 433, first conversion housing 4331, first gear 4332, rack 4333, second conversion housing 4334, first output shaft 4335, second output shaft 4336. Detailed Implementation

[0023] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] This embodiment proposes a chiseling mechanism for connecting the chiseling head 1, such as... Figures 1 to 6 As shown, the device includes an outer shell 2, a feed connector 3, and a chiseling assembly 4. A chiseling head 1 is located at the left end of the outer shell 2. A handle is provided on the outer shell 2 for connecting to a robot or robotic arm. The chiseling assembly 4 is located inside the outer shell 2 and is connected to the feed connector 3, which is slidably connected to the chiseling head 1. The chiseling assembly 4 includes an inner shell 41, a drive unit 42 disposed within the inner shell 41, and a power conversion unit 43 connected to the drive unit 42.

[0026] like Figure 3 and Figure 4As shown, the power conversion unit 43 includes a first piston 431, a second piston 432, and a power conversion component 433. The first piston 431, the second piston 432, and the power conversion component 433 are connected to the drive unit 42. The drive unit 42 supplies water to the chisel head 1 through the first piston 431. The drive unit 42 drives the chisel head 1 to extend or retract through the second piston 432. The drive unit 42 transmits power to the chisel head 1 through the power conversion component 433.

[0027] In this embodiment, when the drive unit 42 is started, it simultaneously drives the first piston 431, the second piston 432, and the power conversion unit 433 in the power conversion unit 43 to work. The first piston 431 is used to supply water to the chisel head 1 to achieve the spraying function. The second piston 432 drives the chisel head 1 to slide on the outer shell 2 through the feed connector 3 to achieve the extension or shortening feed movement. The power conversion unit 433 transmits the power of the drive unit 42 to the chisel head 1 to drive its rotation. This achieves effective coupling of the three actions of rotation, feeding, and water spraying, ensuring uniform chiseling depth and reducing the physical exertion of the operator.

[0028] In a preferred embodiment, the inner housing 41 is fixedly installed inside the outer housing 2. The inner housing 41 includes a partition plate 411 and a water tank 412 disposed on the partition plate 411. The drive unit 42 and the power conversion unit 43 are disposed below the partition plate 411. The drive unit 42 includes a drive frame 421 fixedly disposed below the partition plate 411. Figure 6 As shown, a gear disk 422 is rotatably mounted inside the drive frame 421. A connecting rod 423 is eccentrically hinged to the gear disk 422. A push rod 424 is hinged to the connecting rod 423. The push rod 424 is slidably mounted on the drive frame 421. A sliding plate 425 is fixedly connected to the left end of the push rod 424. The first piston 431, the second piston 432, and the power conversion component 433 are connected to the sliding plate 425. A motor 426 is fixedly mounted on the drive frame 421. The output shaft of the motor 426 is connected to a drive gear 427, which meshes with the gear disk 422.

[0029] In this embodiment, the inner shell 41 is divided into upper and lower parts by a partition plate 411. A water tank 412 is set above the partition plate 411 to store water for the sprinkler system, while the drive unit 42 and power conversion unit 43 are concentrated below. This layout is not only compact but also conducive to the stability of the overall center of gravity. The drive frame 421 serves as a supporting foundation. When the motor 426 is started, the output shaft of the motor 426 drives the drive gear 427 to rotate. The drive gear 427 drives the gear disk 422 to rotate. The gear disk 422 is provided with an eccentric hinge point, which is hinged to a push rod 424 through a connecting rod 423, converting the rotational motion of the gear disk 422 into the reciprocating linear motion of the push rod 424. The end of the push rod 424 is connected to a sliding plate 425, so that the sliding plate 425 also performs high-speed and stable reciprocating motion. The sliding plate 425 is the central hub of the entire power distribution. The sliding plate 425 is connected to the first piston 431 (responsible for water supply), the second piston 432 (responsible for feeding), and the power conversion component 433 (responsible for rotational output). Therefore, the single reciprocating motion of the sliding plate 425 is transmitted synchronously and in parallel to the three actuators, realizing that the three core functions of water spraying, feeding, and rotary cutting are driven simultaneously by one motor 426. This ensures that they are highly synchronized and coupled in their working sequence, ensuring that each rotary cutting, each hydraulic feed, and each dust suppression water spray of the chisel drill 13 does not occur independently, but works in coordination under the same driving rhythm. This solves the problem that these functions are independent and cannot work in coordination in traditional equipment.

[0030] In a preferred embodiment, the first piston component 431 includes a first piston cylinder 4311 and a first piston rod 4312 that is slidably connected within the first piston cylinder 4311. The first piston cylinder 4311 is fixed to the inner housing 41, and the right end of the first piston rod 4312 is fixedly connected to the sliding plate 425. A water inlet is provided at the top of the first piston cylinder 4311, and a water outlet is provided on the left side of the first piston cylinder 4311. A first one-way valve diaphragm (not shown) is provided at the water inlet, and a second one-way valve diaphragm (not shown) is provided at the water outlet. A water inlet pipe 4313 is connected to the water inlet and extends into the water tank 412. A water outlet pipe 4314 is connected to the water outlet and is connected to the chisel head 1.

[0031] In this embodiment, when the drive unit 42 drives the first piston rod 4312 to reciprocate within the first piston cylinder 4311 via the sliding plate 425, it achieves the water pumping function. During the stroke of the first piston rod 4312 pulling to the right, a negative pressure is formed within the first piston cylinder 4311. At this time, the first one-way valve diaphragm at the inlet opens under the action of the pressure difference, while the second one-way valve diaphragm at the outlet closes. Water in the water tank 412 is drawn into the first piston cylinder 4311 through the inlet pipe 4313 to complete the water suction process. During the subsequent stroke of the first piston rod 4312 pushing to the left, the pressure within the first piston cylinder 4311 increases, forcing the first one-way valve diaphragm to close to prevent backflow of water. At the same time, the pressure pushes open the second one-way valve diaphragm, allowing the water accumulated in the first piston cylinder 4311 to be forced into the outlet pipe 4314 through the outlet and finally delivered to the chisel head 1 to complete the drainage process. This cycle repeats continuously, converting the mechanical energy of the drive unit 42 into the pressure energy of water, achieving pulsed water spraying that is strictly synchronized with the chiseling action. This effectively suppresses dust and wets the working surface, allowing for targeted water spraying during the chiseling process of concrete, thus significantly reducing the amount of water used.

[0032] In a preferred embodiment, the power conversion component 433 includes a first conversion component and a second conversion component fixed on the outer shell 2; the first conversion component includes a first conversion shell 4331 fixed on the outer shell 2, a first gear 4332 is rotatably disposed inside the first conversion shell 4331, the first gear 4332 meshes with a rack 4333, and the right end of the rack 4333 is fixedly connected to the sliding plate 425.

[0033] The second conversion component includes a second conversion housing 4334 fixed on the outer housing 2. A first output shaft 4335 and a second output shaft 4336 are rotatably connected to the second conversion housing 4334. The first output shaft 4335 is coaxially and fixedly connected to the first gear 4332. A first bevel gear is coaxially and fixedly mounted on the first output shaft 4335, and a second bevel gear is coaxially and fixedly mounted on the second output shaft 4336. The first bevel gear and the second bevel gear mesh with each other.

[0034] In this embodiment, the rack 4333 fixed on the sliding plate 425 reciprocates linearly with the reciprocating motion of the sliding plate 425. When the rack 4333 moves to the left, it drives the first gear 4332 meshing with it to rotate in one direction (e.g., clockwise). When the rack 4333 moves to the right, it drives the first gear 4332 to rotate in the opposite direction (e.g., counterclockwise), thus directly converting the reciprocating linear motion into the bidirectional rotational motion of the first gear 4332. Subsequently, the first output shaft 4335, which is coaxially fixedly connected to the first gear 4332, rotates in both directions and transmits this forward and reverse motion to the second bevel gear meshing perpendicularly with it through the first bevel gear at its end. The second bevel gear drives the second output shaft 4336 coaxial with it, ultimately outputting power in both forward and reverse directions.

[0035] In a preferred embodiment, the chisel head 1 includes a chisel box 11 and a spray box 12. The chisel box 11 and the spray box 12 are slidably mounted on the outer casing 2, and can only slide on the outer casing, not rotate. A chisel drill 13 is rotatably mounted on the side of the chisel box 11 away from the spray box 12 (i.e., the left side of the chisel box 11). The left end of the drive shaft 33 passes through the spray box 12 and is connected to the chisel drill 13. A plurality of spray columns 14 are provided on the chisel box 11, and a plurality of spray holes are opened on the spray columns 14. The spray columns 14 are connected to the spray box 12, and the water outlet pipe 4314 is connected to the spray box 12.

[0036] In this embodiment, the second output shaft 4336 from the power conversion component 433 transmits forward and reverse rotational motion to the drive shaft 33 through the feed sleeve 31. The drive shaft 33 directly drives the burr drill 13 to perform alternating forward and reverse rotational cutting to effectively break the concrete surface. The forward and reverse rotation method can prevent the drill from getting stuck during the burr process, thus improving work efficiency and adaptability.

[0037] In this embodiment, water from the first piston 431 is continuously pumped into the spray box 12 through the water outlet pipe 4314. The water in the spray box 12 passes through the spray column 14, and the final water pressure causes the water to be sprayed evenly from multiple spray holes on the spray column 14, forming a water curtain covering the chiseling work area. The water curtain can first effectively suppress the dust generated during the chiseling process and improve the working environment. Secondly, it can cool the chiseling drill 13 and wash away the debris, keeping the working surface clean.

[0038] In a preferred embodiment, the second piston component 432 includes a second piston cylinder 4321 fixed on the inner housing 41 and a second piston rod 4322 slidably connected in the second piston cylinder 4321. The right end of the second piston rod 4322 is fixedly connected to the sliding plate 425. A first oil chamber 4323 is formed in the second piston cylinder 4321. The second piston cylinder 4321 has an oil outlet communicating with the first oil chamber 4323. An oil pipe 4324 is connected to the oil outlet.

[0039] In a preferred embodiment, the feed connector 3 includes a feed sleeve 31 coaxially fixedly disposed with the second output shaft 4336. A second oil cavity 32 is formed inside the feed sleeve 31, and the second oil cavity 32 is filled with hydraulic oil. A drive shaft 33 is slidably connected to the second oil cavity 32, and the drive shaft 33 is connected to the shaving drill 13 in the shaving head 1. It should be noted that in this embodiment, the sleeve 31 and the second output shaft 4336 are coaxially fixedly connected, and the drive shaft 33 can slide along the axial direction of the sleeve 31, but the two cannot make relative movement. Rotation, that is, when the sleeve 31 rotates, it synchronously drives the drive shaft 33 to rotate; an oil pipe 4324 is connected between the first oil chamber 4323 and the second oil chamber 32. Specifically, a hollow ring (not shown) is fitted around the outer circumference of the sleeve 31. The ring is rotatably and sealingly installed on the outer circumference of the sleeve 31 and fixed on the outer shell 2. When the sleeve 31 rotates, the ring will not rotate. A cavity is formed inside the ring. The cavity is connected to the second oil chamber 32 and the oil pipe 4324. The purpose of setting the ring is to prevent the oil pipe 4324 from getting tangled.

[0040] In this embodiment, when the drive unit 42 drives the second piston rod 4322 to reciprocate within the first oil chamber 4323 of the second piston cylinder 4321 via the sliding plate 425, during the leftward stroke, the second piston rod 4322 compresses the hydraulic oil in the first oil chamber 4323, and the resulting high-pressure oil is forced into the cavity of the ring sleeve via the oil pipe 4324. The oil in the cavity enters the second oil chamber 32 within the feed sleeve 31. At this time, since the second oil chamber 32 is a closed space, the injected high-pressure oil will push the internally sealed sliding drive shaft 33 to move linearly to the left (i.e., towards the chisel head 1), thereby overcoming resistance and pushing the chisel head 1 towards the concrete working surface, thus realizing the feeding action. The key is that the feed sleeve 31 and the second output shaft 4336 that transmits rotational power are coaxially and fixedly connected. This means that the drive shaft 33 is not only hydraulically driven to make linear motion, but also driven to rotate at high speed by the second output shaft 4336, combining the rotational motion and the linear feed motion into one, and finally transmitting it to the chisel drill 13, so that the chisel drill 13 can automatically and continuously cut into the concrete while rotating and cutting. During the return stroke of the second piston rod 4322, the volume of the first oil chamber 4323 increases to form a negative pressure. The oil in the second oil chamber 32 enters the first oil chamber 4323 through the cavity of the ring sleeve and the oil pipe 4324, causing the chisel head 1 to move to the right.

[0041] This structure is designed to be mounted on a robotic arm or robot. The outer casing 2 is fixed to the robotic arm or robot, and by controlling the opening and closing of the motor 426, it replaces the unstable method of relying on the operator's physical strength in traditional equipment. This improves the uniformity of the chiseling depth and eliminates the traditional method of relying entirely on the operator's physical strength to control the cutting depth. Instead, the second piston 432 generates stable hydraulic pressure, which is transmitted through the oil pipe 4324 to the second oil chamber 32 of the feed sleeve 31, thereby precisely driving the drive shaft 33 connected to the chisel head 1 for axial feeding. The feed amount is directly controlled by the speed, running time, and hydraulic oil volume of the drive unit 42 (motor 426), so that the chiseling depth is no longer affected by the operator's physical strength, experience, or working posture. The operator or robotic arm only needs to fix the position of the outer casing 2 to keep it unchanged, and control the motor 426 to indirectly maintain a constant chiseling depth. This not only greatly reduces labor intensity but also makes the chiseling depth more uniform.

[0042] In this embodiment, the three actions of rotation, feeding, and water spraying constitute a coordinated cycle that is intelligently matched with the work cycle. When the chisel drill 13 rotates forward to perform effective cutting, active feeding and water spraying are performed simultaneously, integrating power, cooling, and dust suppression, achieving a high degree of concentration and efficient utilization of energy and resources during the working phase. When the chisel drill 13 reverses to release jamming and reset its position, water spraying is stopped simultaneously and hydraulic oil retraction is performed, avoiding water waste during non-cutting phases and significantly reducing water consumption. On the other hand, stopping water spraying keeps the concrete debris brought back by the reverse rotation dry, making it easier to remove from the cutting area rather than forming a difficult-to-handle viscous slurry. Thus, multiple goals of improving cutting efficiency, optimizing resource utilization, and improving chip removal are achieved simultaneously. The entire chiseling operation process is fundamentally optimized from a temporal logic perspective, and this invention has high application value.

[0043] On the other hand, the present invention also proposes a method of using a chiseling mechanical structure, including adopting the aforementioned chiseling mechanical structure, and further including the following steps: S1: Fix the outer casing 2 to the robotic arm or robot, and position the chisel head 1 towards the old concrete working surface. First, reliably install the outer casing 2 of the chisel mechanism onto the actuator of the robotic arm or mobile robot, ensuring a secure connection. Then, move the equipment above the old concrete surface to be treated using an external control system (such as a robot control system or a handheld controller), making the chisel head 1 approximately perpendicular to the concrete working surface. Based on the concrete strength, aggregate size, and expected chiseling depth, pre-set the operating parameters of the motor 426 to lay the foundation for subsequent collaborative operations. After the equipment is in place, check whether the water tank 412 has been filled with sufficient water and confirm that there are no leaks in the oil circuit connections.

[0044] S2: Start motor 426. The power of motor 426 is transmitted to gear disk 422 through drive gear 427, converting the rotational motion into the reciprocating linear motion of push rod 424, which in turn drives sliding plate 425 to perform high-speed, stable reciprocating motion. The drive will simultaneously trigger three core actions: First, rotational cutting: sliding plate 425 drives first gear 4332 to rotate alternately forward and backward through rack 4333. After the power is reversed by bevel gear, it is transmitted to drive shaft 33 through feed sleeve 31 by second output shaft 4336, which finally drives chisel drill 13 to perform alternating forward and reverse rotational cutting on the concrete surface, effectively breaking the surface and preventing the drill from getting stuck. Second, active feeding: within the same reciprocating cycle of sliding plate 425, second piston rod 4322 moves synchronously in second piston cylinder 4321, pressing hydraulic oil into second oil chamber 32 of feed sleeve 31 through oil pipe 4324, pushing drive shaft 33 and driving the entire chisel head 1 to stably cut into the concrete surface, realizing controllable feeding motion. Third, synchronized water spraying: The reciprocating motion of the first piston rod 4312 within the first piston cylinder 4311 draws water from the water tank 412 through the inlet pipe 4313, then pumps it into the spray box 12 through the outlet pipe 4314, and finally sprays it out in pulses from the spray holes of the chisel box 11, forming a water curtain covering the cutting area. The rotation, feeding, and water spraying actions are strictly synchronized within one cycle of the sliding plate 425, ensuring that while the chisel drill 13 effectively cuts the concrete, depth control and timely dust suppression and cooling are achieved.

[0045] S3: Under the action of the drive unit 42, the chisel drill 13 periodically switches between forward cutting feed and reverse reset. During the reverse reset, the second piston 432 drives the chisel head 1 to retract, while the spray system continues to work to cool and clean. After a period of forward cutting and feeding, the equipment enters a brief reset phase. At this time, the continuous operation of the motor 426 causes the sliding plate 425 to continue to reciprocate, but the timing of the action causes the rotation direction of the chisel drill 13 to reverse. This reversal helps to throw off and break up concrete debris that may be stuck between the drill bits. At the same time, the second piston 432 enters the return phase, and the first oil chamber 4323 generates negative pressure, which draws back the hydraulic oil in the second oil chamber 32, thereby driving the drive shaft 33 and the chisel head 1 to retract slightly, so that the chisel drill 13 is removed from the current cutting surface, preparing for the next cutting stroke. This periodic cycle of forward feed cutting and reverse retraction chip removal realizes the automation of cutting and chip removal, ensuring the continuity and efficiency of the operation.

[0046] S4: Move the equipment to the next work area and repeat S2-S3 until the work is completed. Stop motor 426, and all actions will terminate synchronously. Once the shaving work in a local area has met the predetermined requirements, the control system instructs the robotic arm or robot to move the equipment to the next adjacent work point. During the relocation, motor 426 can maintain low speed or stop briefly. After moving to the new position, repeat the coordinated shaving cycle of steps S2 and S3. When the entire construction area has been processed or when it is necessary to stop midway, first stop motor 426. Stopping motor 426 will simultaneously terminate the rotation, hydraulic feed, and pulse water spray of shaving drill 13. Finally, remove the equipment from the work surface, clean any residual mud that may be attached to the shaving head 1 and spray holes, and perform routine inspection and maintenance on the equipment, replenish water tank 412, and check for wear.

[0047] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A chiseling mechanism for connecting to a chiseling head (1), characterized in that, include: The outer shell (2), the feed connector (3) and the chiseling assembly (4) are provided. The chiseling head (1) is provided at one end of the outer shell (2). The chiseling assembly (4) is provided inside the outer shell (2). The chiseling assembly (4) is connected to the feed connector (3). The feed connector (3) is slidably connected to the chiseling head (1). The chiseling assembly (4) includes an inner housing (41), a drive unit (42) disposed in the inner housing (41), and a power conversion unit (43) connected to the drive unit (42). The power conversion unit (43) includes a first piston (431), a second piston (432), and a power conversion component (433). The first piston (431), the second piston (432), and the power conversion component (433) are connected to the drive unit (42). The drive unit (42) supplies water to the chisel head (1) through the first piston (431). The drive unit (42) drives the chisel head (1) to extend or shorten through the second piston (432). The drive unit (42) transmits power to the chisel head (1) through the power conversion component (433).

2. The chiseling mechanism according to claim 1, characterized in that: The inner shell (41) includes a partition plate (411) and a water tank (412) disposed on the partition plate (411). The drive unit (42) and the power conversion unit (43) are disposed below the partition plate (411).

3. The chiseling mechanism according to claim 2, characterized in that: The drive unit (42) includes a drive frame (421) fixedly mounted on a partition plate (411). A gear disk (422) is rotatably mounted inside the drive frame (421). A connecting rod (423) is eccentrically hinged to the gear disk (422). A push rod (424) is hinged to the connecting rod (423). The push rod (424) is slidably mounted on the drive frame (421). A sliding plate (425) is connected to the end of the push rod (424). The first piston (431), the second piston (432), and the power conversion component (433) are connected to the sliding plate (425). A motor (426) is fixedly mounted on the drive frame (421), and the output shaft of the motor (426) is connected to a drive gear (427), which meshes with the gear disk (422).

4. The chiseling mechanism according to claim 3, characterized in that: The first piston component (431) includes a first piston cylinder (4311) and a first piston rod (4312) that is slidably connected in the first piston cylinder (4311). The first piston rod (4312) is fixedly connected to the sliding plate (425). The first piston cylinder (4311) has an inlet and an outlet. A first one-way valve diaphragm is provided at the inlet, and a second one-way valve diaphragm is provided at the outlet. The inlet is connected to an inlet pipe (4313), which extends into the water tank (412). The outlet is connected to an outlet pipe (4314), which is connected to the chisel head (1).

5. The chiseling mechanism according to claim 4, characterized in that: The second piston component (432) includes a second piston cylinder (4321) and a second piston rod (4322) that is slidably connected within the second piston cylinder (4321), and the second piston rod (4322) is fixedly connected to the sliding plate (425); The second piston cylinder (4321) has a first oil chamber (4323) formed inside it. The second piston cylinder (4321) has an oil outlet that communicates with the first oil chamber (4323). An oil pipe (4324) is connected to the oil outlet.

6. The chiseling mechanism according to claim 5, characterized in that: The power conversion component (433) includes a first conversion component and a second conversion component fixed to the outer casing (2); The first conversion component includes a first conversion shell (4331) fixed on the outer shell (2), a first gear (4332) is rotatably disposed inside the first conversion shell (4331), the first gear (4332) meshes with a rack (4333), and the rack (4333) is fixedly connected to the sliding plate (425). The second conversion component includes a second conversion shell (4334) fixed on the outer shell (2). A first output shaft (4335) and a second output shaft (4336) are rotatably connected to the second conversion shell (4334). The first output shaft (4335) is coaxially fixedly connected to the first gear (4332). A first bevel gear is coaxially fixedly disposed on the first output shaft (4335), and a second bevel gear is coaxially fixedly disposed on the second output shaft (4336). The first bevel gear meshes with the second bevel gear.

7. The chiseling mechanism according to claim 6, characterized in that: The feed connector (3) includes a feed sleeve (31) coaxially fixed with the second output shaft (4336), a second oil cavity (32) is formed inside the feed sleeve (31), the second oil cavity (32) is filled with hydraulic oil, and a drive shaft (33) is slidably connected inside the second oil cavity (32), the drive shaft (33) is connected to the burr head (1); The first oil chamber (4323) and the second oil chamber (32) are connected by an oil pipe (4324).

8. The chiseling mechanism according to claim 7, characterized in that: The chisel head (1) includes a chisel box (11) and a spray box (12). The chisel box (11) and the spray box (12) are slidably disposed on the outer shell (2). A chisel drill (13) is rotatably disposed on the side of the chisel box (11) away from the spray box (12). The drive shaft (33) passes through the spray box (12) and is connected to the chisel drill (13).

9. The chiseling mechanism according to claim 8, characterized in that: The chiseling box (11) is provided with several spray columns (14), and several spray holes are opened on the spray columns (14). The spray columns (14) are connected to the spray box (12), and the water outlet pipe (4314) is connected to the spray box (12).

10. A method of using a chiseling mechanism, comprising employing the chiseling mechanism as described in any one of claims 1 to 9, characterized in that, It also includes the following steps: S1: Fix the outer shell (2) to the robotic arm or robot and make the chisel head (1) face the old concrete work surface; S2: Start the motor (426), drive the sliding plate (425) to reciprocate through the drive unit (42), synchronously drive the power conversion component (433), the first piston component (431) and the second piston component (432), so that the burr drill (13) performs rotary cutting on the concrete surface, the burr head (1) continuously cuts into the working surface under hydraulic feed, and the spraying system pulses water to suppress dust in the cutting area; S3: Under the action of the drive unit (42), the chisel drill (13) periodically switches between forward cutting feed and reverse reset. When it reverses, the second piston (432) drives the chisel head (1) to retract, and the spray system continues to work to cool and clean. S4: Move the mobile device to the next work area and repeat S2-S3 until the work is completed. Stop the motor (426) and all actions will terminate synchronously.

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